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18 lines
527 B
JavaScript
18 lines
527 B
JavaScript
import lodashStable from 'lodash';
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import { empties, stubNaN } from './utils';
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import mean from '../src/mean';
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describe('mean', () => {
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it('should return the mean of an array of numbers', () => {
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const array = [4, 2, 8, 6];
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expect(mean(array)).toBe(5);
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});
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it('should return `NaN` when passing empty `array` values', () => {
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const expected = lodashStable.map(empties, stubNaN);
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const actual = lodashStable.map(empties, mean);
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expect(actual).toEqual(expected);
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});
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});
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